Few people were as plugged into the art world of her day as the late Ileana Sonnabend, whose visionary collections are on display at the Peggy Guggenheim Collection in Venice, Italy, through October...

For his new book about Jesus, Pope Benedict XVI is using Faber-Castell pencils to write his original draft. Vincent van Gogh recommended the brand to painter Anthon van Rappard in a letter, of which...